main()//唐子豪
{
    int i,j,k,l,m,n;
    printf("Input two FENSHU:\n");
    scanf("%d/%d,%d/%d,&i,&j,&k,&l");
    m=zxgb(j,l)/j*i;
    n=zxgb(j,l)/l*k;
    if(m>n) printf("%d/%d>%d/%d\n",i,j,k,l);
    else if(m==n) printf("%d/%d=%d/%d\n",i,j,k,l);
        else    printf("%d/%d<%d/%d\n",i,j,k,l);
}
zxgb(a,b)
    int a,b;
    {
            long int c;
            int d;
            if(a<b)c=a,a=b,b=c;
            for(c=a*b;b!=0;){
                d=b; b=a%b; a=d;

        
            }
            return((int)c/a);
    }